You added a sidecar container to your pod, but it never transitions to the Running state. What is the most probable reason?

medium📝 Troubleshoot Q6 of 15

Kubernetes - Pods

AThe main container is running, so the sidecar is not needed.

BThe sidecar container image is missing or cannot be pulled.

CSidecar containers do not run automatically and require manual start.

DThe pod spec does not allow more than one container.

Step-by-Step Solution

Solution:

Step 1: Check container image availability
If the sidecar container image is missing or inaccessible, Kubernetes cannot start it.
Step 2: Understand container lifecycle
All containers in a pod start automatically; sidecars are not manual.
Step 3: Verify pod spec constraints
Pods support multiple containers; no limit of one container.
Final Answer:
The sidecar container image is missing or cannot be pulled. is the most likely cause for the sidecar not starting.
Quick Check:
Image pull failure prevents container start [OK]

Quick Trick: Image pull errors prevent container from running [OK]

Common Mistakes:

Master "Pods" in Kubernetes

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